Paper-based all-solid-state flexible micro-supercapacitors with ultra-high rate and rapid frequency response capabilitiesElectronic supplementary information (ESI) available. See DOI: 10.1039/c6ta00159a
Paper-based flexible supercapacitors (SCs) have attracted great attention as they enable the realization of next-generation bendable, light-weight, and environmentally-friendly portable electronics. However, conventional paper-based SCs adopt a sandwich-like structure suffering from poor rate perfor...
Saved in:
Main Authors | , , , , , , , , , , , , , , , , |
---|---|
Format | Journal Article |
Published |
01.03.2016
|
Online Access | Get full text |
Cover
Loading…
Summary: | Paper-based flexible supercapacitors (SCs) have attracted great attention as they enable the realization of next-generation bendable, light-weight, and environmentally-friendly portable electronics. However, conventional paper-based SCs adopt a sandwich-like structure suffering from poor rate performance, slow frequency response and difficulty in direct integration with other micro-devices. We report here for the first time paper-based all-solid-state flexible planar micro-supercapacitors (MSCs) using poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)-CNT/Ag as the electrode material by the inkjet printing technique. The as-fabricated paper-based all-solid-state flexible MSCs deliver the best rate capability among all reported paper-based MSCs/SCs (up to 10 000 mV s
−1
), fast frequency response (relaxation time constant
τ
0
= 8.5 ms), high volumetric specific capacitance (23.6 F cm
−3
) and long cycle stability (92% capacitance retention after 10 000 cycles), which shows a strong dependence on the film thickness and the interdigitated spacing between neighbouring fingers, respectively. Furthermore, the series and parallel connections reveal that the as-prepared paper-based MSCs obey the basic theorem of series and parallel connections of capacitors, respectively. The combination of the simple fabrication technology and excellent performances presented here not only make paper-based all-solid-state flexible MSCs an attractive candidate for powering future flexible portable electronics, but also provide important references for the design and fabrication of other high-performance flexible energy storage devices.
Novel micro-supercapacitors with excellent rate capability, response frequency, and cycle stability are designed. |
---|---|
Bibliography: | 10.1039/c6ta00159a Electronic supplementary information (ESI) available. See DOI |
ISSN: | 2050-7488 2050-7496 |
DOI: | 10.1039/c6ta00159a |